What do you do for a bruised and swollen hand?

To be sure that no bones in your hand are broken, you should consult your physician or go to your nearest Emergency room for treatment. Until then, prevent pain and swelling by applying ice to the area, until you can get an appointment to be seen.

Alternating cold (ice in a dry cloth) and heat. If you believe that your hand may be broken, you will need an x-ray and medical treatment. A test is if you can make a fist and push on the tips of your fingers without pain.